A nurse working in a mental health facility is utilizing milieu therapy to provide a therapeutic environment for their clients. Which of the following steps of the nursing process is the nurse demonstrating?

The correct answer is D: Implementation. Milieu therapy involves creating a therapeutic environment that promotes healing and growth. The nurse implementing milieu therapy is actively putting the plan into action by maintaining a safe and supportive environment for clients. Evaluation (A) comes after implementation to assess the effectiveness of the therapy. Planning (B) involves developing a strategy for care. Assessment (C) is the initial step of gathering data. The other choices are not directly related to the active process of creating a therapeutic environment through milieu therapy.